So this is new for me, and I don't know if these two things are related, but here goes:

1. When I upload new images through the "Add Media" interface, the images are uploaded, however, the resulting page is blank.

2. Also, (and this just started happening), now when users attempt to select images using the WYSIWYG editor, clicking the "Done" button does nothing. When other users want to add images, I currently have to log in to edit their articles and enter the images by hand by using the source code editor.

I'm not sure if these things are related or not, but it's kinda frustrating. Any tips?

yellowled wrote:Do you experience the same as other users? (This might be a permission thing or related to the browser, that's why I ask.)

Oddly enough, this issue seems to be intermittent. Sometimes it works, other times, nothing. It has happened with different browsers (firefox & brave) and with different users (admin account and a standard editor).

Last night, I couldn't using admin & firefox. I just tried today with the same account & browser, and it works. ¯\_(ツ)_/¯

Together with your "Sometimes it works, other times, nothing.", I'm pretty sure this is not a Serendipity issue.

See the "Not a JPEG file"? That could explain why it sometimes works – apparently the GD library (which PHP uses in your case to process images) can not process this particular image. The image could be "broken". (Actually, a quick google search brings up quite a few instances for this particular error message.)

If ImageMagick is available on your server, you could try using that instead of GD (needs to be switched in the Serendipity configuration in the backend, I think).

yellowled wrote:Together with your "Sometimes it works, other times, nothing.", I'm pretty sure this is not a Serendipity issue.

See the "Not a JPEG file"? That could explain why it sometimes works – apparently the GD library (which PHP uses in your case to process images) can not process this particular image. The image could be "broken". (Actually, a quick google search brings up quite a few instances for this particular error message.)

If ImageMagick is available on your server, you could try using that instead of GD (needs to be switched in the Serendipity configuration in the backend, I think).